Fronts propagating with curvature-dependent speed: algorithms based on Hamilton-Jacobi formulations
Journal of Computational Physics
SKETCH: an interface for sketching 3D scenes
SIGGRAPH '96 Proceedings of the 23rd annual conference on Computer graphics and interactive techniques
Wires: a geometric deformation technique
Proceedings of the 25th annual conference on Computer graphics and interactive techniques
Teddy: a sketching interface for 3D freeform design
Proceedings of the 26th annual conference on Computer graphics and interactive techniques
Level set surface editing operators
Proceedings of the 29th annual conference on Computer graphics and interactive techniques
Smooth meshes for sketch-based freeform modeling
I3D '03 Proceedings of the 2003 symposium on Interactive 3D graphics
Global and local deformations of solid primitives
SIGGRAPH '84 Proceedings of the 11th annual conference on Computer graphics and interactive techniques
Volume Sculpting Using the Level-Set Method
SMI '02 Proceedings of the Shape Modeling International 2002 (SMI'02)
Feature Based Retargeting of Parameterized Geometry
GMP '04 Proceedings of the Geometric Modeling and Processing 2004
Interactive modelling from sketches using spherical implicit functions
AFRIGRAPH '04 Proceedings of the 3rd international conference on Computer graphics, virtual reality, visualisation and interaction in Africa
A painting interface for interactive surface deformations
Graphical Models - Special issue on pacific graphics 2003
Sketch-based modeling with few strokes
Proceedings of the 21st spring conference on Computer graphics
Dynamic Tubular Grid: An Efficient Data Structure and Algorithms for High Resolution Level Sets
Journal of Scientific Computing
A sketching interface for modeling the internal structures of 3D shapes
ACM SIGGRAPH 2006 Courses
Sketch-based modeling with the blob tree
SIGGRAPH '05 ACM SIGGRAPH 2005 Sketches
FiberMesh: designing freeform surfaces with 3D curves
ACM SIGGRAPH 2007 papers
Plushie: an interactive design system for plush toys
ACM SIGGRAPH 2007 papers
A sketch-based method to control deformation in a skeletal implicit surface modeler
SBM'08 Proceedings of the Fifth Eurographics conference on Sketch-Based Interfaces and Modeling
Technical Section: WarpCurves: A tool for explicit manipulation of implicit surfaces
Computers and Graphics
Technical Section: Interactive free-form level-set surface-editing operators
Computers and Graphics
Data structures for interactive high resolution level-set surface editing
Proceedings of Graphics Interface 2011
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Level set models are deformable implicit surfaces where the deformation is controlled by a speed function in the level set partial differential equation (PDE). These models are widely used in computer graphics applications due to their implicit definition, low-level volumetric representation and the powerful numerical techniques used to produce the PDE-based deformation. We present a set of interactive sketch-based level-set surface editing operators. These operators allow a user to sketch curves above or on a level-set surface in order to edit the surface's shape. Once the curves are sketched the surface interactively evolves to locally fit to the curves. A user may then modify the curves in order to refine the shape of the model. The mathematics, algorithms and techniques needed to implement numerous sketch-based level set modeling capabilities are described. The speed functions that produce the surface deformations within the context of solving the level-set PDE are detailed. Several examples are presented to demonstrate the flexibility and usefulness of the editing operators.